District of



- Inventum MFETERS, PH MER, WASHINGTON D C which works them.

- niteil A. PQBLUNT AND JACOB S. SMITH, OF` WASHINGTON, DISTRICT OF COLUMBIA. Letters .Patent No. 86,899, dated Fabrica/ry 16, 1869.

IMPRovnD mvaLID-CHAIR The Schedule referred to n these Letters Patent and making parg ofthe same.

To all whom-fit may concern:

Be it known that we, A. P. BLUN'r and JAcoB S. SMITH, of Washington city, in the District of Oolum bia, have invented new and useful Improvements in Adjustable Invalid-Chairs; and we do declare that the following is a full and exact description thereof, reference being had to thev accompanying drawings, and to the letters marked thereon.

The nature of our invention consists in making an upholstered chair, with back that may incline backward to 'any given point, by means of steel catches in socket-joints at foot of back posts; with having two wheels, instead of back legs, attached to the back part of the seat by means of springs; also, in having a footl rest, which is elevated and lowered independently of all the-rest, by means of a cogged quadrant attached to either side, and worked by two small cog-wheels turned by a small crank, all so adjusted that it may be au upright chair, or a dat lounge, as the occupant may desire.

To enable thoseskilled in the art to make and use ourinvention, we will proceed to describe its construe tion and operation.

Figure l is our chair iinished, ready for use, showing the cranks by which the foot-rest is adjusted, and the one by which the back also is adjusted. y,

Figure 2 is a bisectional view of the chair, ready for upholstering.

Figure 3 is a top View of our chair, showing springcatches at foot of back posts, and the armed lever Figure 4 represents one cog-wheel and part of shaft with cogged quadrant, crank for. turning shaft, and crank to raise the ratchet.

Figure 5 represents oneY of the socket-joints of our chair disconnected. v A y Figure 6 represents socket-joint for the back posts, showing the spring for'holding the back iu position, with the catches to receive the springs, with one end of arm, shaft, and crank, to work the same.

Figure 7 is another socket-joint, to connect arm with back posts.

A is frame of seat.

' B B are posts 'of the back.

C G, the arms.

D D, the legs.

E, the foot-rest.

F, cog-wheel that works the cogged quadrant.

c', cogged quadrant.

b, crank that lifts the ratchet.

d, the ratchet.

c c, sockets to receive the ends of the quadrant when the foot-rest is down against the legs.

f jointed braces to support the lower part of the foot-rest, when` turned up to meet the bottom of the Icet.

n g, notched joint, to regulate the inclination of the back. v

h, spring-catch, which shuts into the notched joint g, to hold the back' in the given position.

j, armed lever, with crank to Work the spring h.

S, socketjoint. Y l

V, steel hinges for socket-joints.

X, springs which hold the axle to the chair.

The object of our invention is to secure a tilting chair for invalids, which shall be a perfect chair, and be l capable of being moved about out of doors, as a. carriage; also to have a chair Whose back may be in- 'olined to any given point, independently of any other part, and which may be adjusted at any elevation desired.

In order to accomplish this, We construct our chair in the following manner, to witzv We make the 4seat-frame, A, of black walnut, or any other suitable wood, as shown. .To forward end attach ordinary legs or posts, made broad, to receive the machinery which works the foot-rest.

To the back part of the seat are attachedthe steelsprings X, to which the axle H is attached, so that the wheels M M are in the place of legs or posts behind.

The arm aud back posts are attached to the seat by means of socket-joints S S S S, held in place by steel circular hinges V V V V, which socket-joints and circular hinges are fully shown in iig. 5.

The arm C is joined to posts by like socket-joints, and'circular hinges.

The socket-joints allow the back to fall to any position desired, and leavev no open joint, like any other hinge, to: catch the clothing, and no opening in the upholstering, as with all other `joints. I

At the foot of both back posts is a notched hinge, g, shown in iig. 6, (which represents the joint detached.)

Into the notches shuts the spring 71., to hold the back at any inclination desired.

By raising the crank upward, the arm 7' isborne downward, and the spring pushed out of the notch, when the back may be inclined, as shown in iig. 2.

To the ibrward part of the seat, in front of posts, is attached the adjustable foot-rest E. To it are attached the cogged quadrants a, which hohl it at any elevation desired.

Running from post to post, is a shaft, n, on which are two cog-wheels, F F, which work the quadrant, and elevate or depress the rest E.

The shaft n is turned by acrank, o, as seen in iig. 4;

We have, on one of the posts, a ratchet, d, as seen in iig. 2, which drops between the cogs ofthe cog-wheel,

and holdsthe foot-rest when desired.

On the outsideof part D is a small handle, b, which is attached to a small shaft, which passes through post D, and to which the ratchet ll is attached. By this handle the ratchet is raised or dropped, as 'seen in iig. 4.

At the lower end of the foot-rest is a drop, P, which may be raised at pleasure, to meet the bottom of the feet, and is supported by the' jointed braces ff.

As will be seen by lig. 5, our socket-joints are cir cular hinges, attached and applied in such manner as not to be easilyderauged. '.Llie two halves of the hinge are on the post and arm,^a11d the pin fastening them passes through the whole joint, so that no opening is made by moving the frame backward and forward.

The same principle is shown in figs. 6 and 7 so that, bythe socket-joints, no inconvenience is experienced in `npholstering, and the joints are all covered, and the chair worked with no show of open. joints.

When the chair is in use, thc'foot-rest E may be raised level with vthe seat, as shown in g. 2 by red lines, and, by means of handles 1 p, the forward part may be raised, and the chair used as a carriage.

Having thus fully described our chair,

What We claim as new, and desire to secure by Letters Patent, is-

A cha-ir, constructed with Wheels an. m, attached by inea-ns of springs X X, arms and back united by socket joints S S S S, foot-rest- E, drop P, cogged quadrants a a, shaft n, with cog-wheels F F, ratchet d, crank b, armed shai'tj, springs h l1, cra-nk k, and notched joint y, as arranged, for the use and purpose'as specified and herein set forth.

In testimony whereof, we have signed our naines to this speciication, in the presence of tivo subscribing witnesses.

A. P. BLUNT.

' 'J. S. SMITH.

Vitnesses as to A. l. BLUNT:

THEODORE SPANGLER, GEO.' S. ROBERTS.

Witnesses as :to J. S. SMITH:

JOHNl lDifivls, M. T. JnFFERis. 

